[BoltspeedMen]

Iv been having a 4l80e laying around for some time and im finally getting around to ordering a converter for it and trans-go, as my 4l60e is start to get a little bitchy. I have 2001 ext. cab and my 4l80e is out of a 2000 (obs). I cant find a definite answer any where. Do you have to shorten the drive shaft for the 4l80e if you have a factory 2 piece drive shaft or not?

Also hows first gear? is it bad enough to re-gear?

 

[NuckenFuts]

Im installing my 80 right now and I had to get a different drive shaft front and back. I have a one piece drive shaft unlike you. Some guys get away with using their stock shafts and some don't.

Feel free to check last two pages on my build thread to see what I have just did on my 01 for the swap.

 

[darnie1987]

the rear will need to be shortened just a tad " one peice", i had mine sent off and recut and balanced no issues. as with the frount im going to get a 2500 HD drive shaft should work, alot of guys do this.